<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <link rel="stylesheet" href="./bootstrap/css/bootstrap.css">
</head>
<body>
    <img src="holder.js/140x140?text=hello world&bg=#123aca&fg=#f00" alt="" />
    <img
    src="holder.js/300x300?text=蒋运灯放学别走&fg=#c7c740&bg=#123&size=20"
      alt=""
      class ="img-circle"
    />
    <script src="./holder.js"></script>
</body>
</html>